The answer to the question is PCR
Answer:
The flow/transfer of energy would be A) sound-electrical-sound
Explanation:
When you are talking on the telephone, you speak, which produces sound. The telephone picks up this energy and converts it to electrical signals, which are then converted back to sound on the other end of the line, thus the answer to your question being A) sound-electrical-sound
Depends on two factors: mass and distance.
B. comet
comets only have tails because the sun is shining its light on the ice and dust behind the comet